{"id":6909,"date":"2026-06-22T02:06:16","date_gmt":"2026-06-22T02:06:16","guid":{"rendered":"https:\/\/materialparts.com\/mp34dt06jtr\/"},"modified":"2026-06-22T02:06:16","modified_gmt":"2026-06-22T02:06:16","slug":"mp34dt06jtr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/mp34dt06jtr\/","title":{"rendered":"MP34DT06JTR"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The MP34DT06JTR from STMicroelectronics is a MEMS audio microphone with 64dB SNR, 2.4MHz PDM output, and 2.65MHz acoustic overload point in a 3.0×1.8×0.9mm SMD package.<\/p>\n

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\u0627\u0644\u0646\u0648\u0639<\/td>\nMEMS Digital Audio Microphone (Bottom Port)<\/td>\n<\/tr>\n
Sensitivity<\/td>\n-26 dBFS<\/td>\n<\/tr>\n
SNR<\/td>\n64 dB (A-weighted)<\/td>\n<\/tr>\n
Frequency Response<\/td>\n20 Hz to 20 kHz<\/td>\n<\/tr>\n
Acoustic Overload Point<\/td>\n2.65 kHz (130 dB SPL)<\/td>\n<\/tr>\n
Output Format<\/td>\nPDM (1-bit Pulse Density Modulation)<\/td>\n<\/tr>\n
Clock Frequency<\/td>\n1.0 to 3.25 MHz<\/td>\n<\/tr>\n
Current Consumption<\/td>\n550 uA (typical)<\/td>\n<\/tr>\n
THD<\/td>\n1% @ 130 dB SPL<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n1.8V<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSMD (3.0 x 1.8 x 0.9 mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40C to +85C<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 64dB A-weighted SNR for clear audio capture<\/li>\n
  • PDM digital output eliminates analog noise susceptibility<\/li>\n
  • 2.65kHz acoustic overload point (130 dB SPL)<\/li>\n
  • Bottom-port for PCB-through-hole acoustic path<\/li>\n
  • 1.8V low-voltage operation<\/li>\n
  • Ultra-compact 3.0×1.8×0.9mm package<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Smartphones and tablets<\/li>\n
    • Wearable voice interfaces<\/li>\n
    • Voice recognition and AI assistants<\/li>\n
    • Audio recording and beamforming<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MP34DT06JTR from STMicroelectronics is a MEMS audio microphone with 64dB SNR, 2.4MHz PDM output, and 2.65MHz acoustic overload point in a 3.0×1.8×0.9mm SMD package. Key Specifications Type MEMS Digital Audio Microphone (Bottom Port) Sensitivity -26 dBFS SNR 64 dB (A-weighted) Frequency Response 20 Hz to 20 kHz Acoustic Overload Point 2.65 kHz […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[142],"class_list":["post-6909","post","type-post","status-publish","format-standard","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-st"],"acf":{"brief_explanation":"MEMS Microphone, 64dB SNR, PDM Output, 1.8V, 3.0x1.8mm","date_code":"","package_case":"SMD (3.0 x 1.8 x 0.9 mm)","in_stock":8901,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/mp34dt06j.pdf","price":"$0.65 @ 1ku","product_introduction":"The MP34DT06JTR from STMicroelectronics is a digital MEMS microphone with a PDM (Pulse Density Modulation) output interface. The device integrates a MEMS sensing element and a preamplifier with a sigma-delta modulator on a single chip. The 64 dB A-weighted SNR provides high-quality audio capture suitable for voice recognition and recording applications. The 130 dB SPL acoustic overload point handles loud environments without clipping. The PDM digital output is immune to analog interference from nearby RF and digital circuits, making it ideal for smartphone and tablet designs. The bottom-port configuration allows the acoustic opening to be on the PCB side, enabling clean industrial design. The 1.8V supply voltage and 550 uA current consumption are compatible with always-on voice-detection systems. The compact 3.0 x 1.8 x 0.9 mm package minimizes board area.","working_principle":"The MP34DT06JTR converts sound pressure to a digital PDM bitstream through three stages. First, the MEMS sensing element is a capacitive microphone consisting of a flexible diaphragm and a rigid backplate. Incoming sound pressure waves deflect the diaphragm, changing the capacitance between the diaphragm and backplate. Second, a charge amplifier converts this capacitance change to a voltage signal. Third, a sigma-delta modulator digitizes the analog voltage into a 1-bit PDM stream at the clock frequency (1.0-3.25 MHz). The PDM output is a high-frequency bitstream where the density of '1' bits represents the instantaneous signal level. Decimation filtering in the host processor or codec converts the PDM stream to standard PCM audio (e.g., 48 kHz, 16-bit). The 64 dB SNR is determined by the MEMS transducer's mechanical noise floor and the modulator's quantization noise shaping. The 130 dB SPL acoustic overload corresponds to the point where THD reaches 1% as the diaphragm reaches maximum deflection.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>1.8V supply<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>CLK<\/td>Input<\/td>PDM clock input (1.0-3.25 MHz)<\/td><\/tr>
      4<\/td>DOUT<\/td>Output<\/td>PDM data output<\/td><\/tr>
      5<\/td>L\/R<\/td>Input<\/td>Left\/Right channel select (stereo pairing)<\/td><\/tr>
      -<\/td>Acoustic Port<\/td>Mechanical<\/td>Bottom-side sound inlet<\/td><\/tr><\/table>","application_scenarios":"
      • Smartphone dual-microphone beamforming with L\/R stereo pairing via PDM<\/li>
      • Smart speaker always-on voice detection at 550uA from 1.8V rail<\/li>
      • Wearable voice assistant with 64dB SNR for wake-word recognition<\/li>
      • Industrial audio monitoring with 130dB SPL headroom for machinery<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ST<\/td>MP34DT05-A<\/td>3.5x2.65mm<\/td>Similar, top-port version<\/td><\/tr>
        TDK InvenSense<\/td>ICS-43434<\/td>3.5x2.65mm<\/td>I2S output, 65dB SNR<\/td><\/tr>
        Knowles<\/td>SPH0645LM4H<\/td>3.5x2.65mm<\/td>I2S output, 65dB SNR<\/td><\/tr>
        TDK InvenSense<\/td>ICS-41350<\/td>3.5x2.65mm<\/td>Ultra-low noise, 68dB SNR<\/td><\/tr>
        ST<\/td>MP23ABS1TR<\/td>3.0x1.8mm<\/td>Analog output version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=6909"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6909\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6909"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6909"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}